python match search 和不匹配

    
    match

匹配string 开头，成功返回Match object, 失败返回None，只匹配一个。

import re
x='ccaabb'
if  re.match("aa",x):
    print '1111111'
    
C:\Python27\python.exe C:/Users/TLCB/PycharmProjects/untitled/eeeee/a9.py

Process finished with exit code 0

import re
x='aabb'
if  re.match("aa",x):
    print '1111111'
    
    
C:\Python27\python.exe C:/Users/TLCB/PycharmProjects/untitled/eeeee/a9.py
1111111


    
search

在string中进行搜索，成功返回Match object, 失败返回None, 只匹配一个。

import re
x='aabb'
if  re.search("aa",x):
    print '1111111'
    
C:\Python27\python.exe C:/Users/TLCB/PycharmProjects/untitled/eeeee/a9.py
1111111

import re
x='ccaabb'
if  re.search("aa",x):
    print '1111111'
    
C:\Python27\python.exe C:/Users/TLCB/PycharmProjects/untitled/eeeee/a9.py
1111111


import re
x='ccaabb'
if  not re.search("kk",x):
    print '1111111'